package com.sky.aspect;


import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.time.LocalDateTime;

/*自定义切面类*/
@Aspect
@Component
@Slf4j
public class AutoFillAspect {


    @Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
    public void autoFillPointCut() {}

    @Before("autoFillPointCut()")
    public void autoFill(JoinPoint joinPoint) {

        MethodSignature signature = (MethodSignature)joinPoint.getSignature();
        AutoFill autoFill = signature.getMethod().getAnnotation(AutoFill.class);
        OperationType operationType = autoFill.value();
        Object[] args = joinPoint.getArgs();
        if(args == null || args.length == 0) {
            return;
        }
        Object arg = args[0];

        LocalDateTime now = LocalDateTime.now();
        Long currentId = BaseContext.getCurrentId();
        if(operationType == OperationType.INSERT) {

            try {
                Method setCreateTime = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
                Method setUpdateTime = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setCreateUserId = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
                Method setUpdateUserId = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);

                setCreateTime.invoke(arg,now);
                setUpdateTime.invoke(arg,now);
                setCreateUserId.invoke(arg,currentId);
                setUpdateUserId.invoke(arg,currentId);

            } catch (Exception e) {
                throw new RuntimeException(e);
            }


        }else if(operationType == OperationType.UPDATE) {


            try {
                Method setUpdateTime = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);

                Method setUpdateUserId = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);


                setUpdateTime.invoke(arg,now);

                setUpdateUserId.invoke(arg,currentId);
            } catch (Exception e) {
                throw new RuntimeException(e);
            }

        }



        log.info("公共字段填充...");
    }

}
